Update README.md

Author: gkorland

README.md

@@ -1,6 +1,7 @@
 [![license](https://img.shields.io/github/license/RediSearch/redisearch-api-rs.svg)](https://github.com/RediSearch/redisearch-api-rs)
 [![GitHub issues](https://img.shields.io/github/release/RediSearch/redisearch-api-rs.svg)](https://github.com/RediSearch/redisearch-api-rs/releases/latest)
 [![CircleCI](https://circleci.com/gh/RediSearch/redisearch-api-rs/tree/master.svg?style=svg)](https://circleci.com/gh/RediSearch/redisearch-api-rs/tree/master)
+[![macos](https://github.com/RediSearch/redisearch-api-rs/workflows/macos/badge.svg)](https://github.com/RediSearch/redisearch-api-rs/actions?query=workflow%3Amacos)
 [![Forum](https://img.shields.io/badge/Forum-RediSearch-blue)](https://forum.redislabs.com/c/modules/redisearch/)
 [![Gitter](https://badges.gitter.im/RedisLabs/RediSearch.svg)](https://gitter.im/RedisLabs/RediSearch?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)